Improvement in machines for cutting staves



I 'dniird gratta AMYNTAS J. HOWELL ANDy JAMES MURPHY, OF'SPRU'OE HILL,PENN-` puwi ema.

SYLVANIA. A i

Letters Patent No. 111,457, dated Jannary`31, 1871.

'INIPRovEIIfIEN'I IN` MACHINES. FoR CUTTING sTAvEs.

.The Schedule rfen'ed'to in these Letters Patent andmaking-part of the same.

. We, Amrsrns J. HownLL- and Janes Mcnrnr,

vboth of Spruce Hill, inv the'county of Juniata and.

State of Pennsylvania,'have invented an Improved Stave-0utter, of which the following isv a specification.

Naim-e and Objects of tlzc invention..

,being performed simultaneously.

"A stave complete, except jointing, is produced at, each movement.

The cylinder is operated through -a rod attached to a depending arm of the same; The improvement consists in a peculiar construction ofthe crozing and chamfering cutters, and in the employment of a'novel adjusting device to regulate `the thickness of staves, whereby the machine, at the Vsame or a less 'cost than those now in use", is adapted to-suceessfully perfornr its severalfunctions without liability to rapid wear or disarrangement of parts.

Descrton o the Accompanying Drawing.

Figure l is a perspective view of an illustrative Inachine adapted to form stavcs for barrels or kegs, Figure 2 is a transverse section of the same. Like reference letters indicate correspondingr parts.

General Description..

A in the drawing representsa strong frame, oi either metal or wood; f v B, a cylinder journaled horizontally therein; and C, a shelf or table on the same, about in line with the axis of the cylinder B. A

The table C serves to support the bolts from which the stares are immediately cut, and may be provided with suitable guiding and feeding devices. It consists, preferably, of a solid metal plate, provided with. a groove, @supplied with wood on end, rubber, or analogous substance for the reception of' the edge of. the severing-knife.

The cylinder `B is the base or stock of the knives or cutters, and is adapted to -receivean oscillatory' Inotion to operate the same. The pendants D D and connecting-rod E are for this purpose. The said cylinder is. preferably composed ot' a Wrought-iron central shaft,` bf. and parallel cast-iron disks b b, secured on said shaft* by keys z, in a continuous key-seat,` y, or their equivalent, so as to be.. adjustable as to distances apart, the said disks beingl so arranged as to afford the requisite points of attachment for the knives, 85e. But this construction is not essential.

The frame A, as shown", is composed of cast ends zo and wrought-iron strut-braces a', the former being .adapted'to bc cast from a single'pattern by having the support a for the table C on each edge.

F represents the outer cutter, which is a thin steel knife of su'dcient' length to cut the gauge ot' stave, for which intended form one of its long edges being so curved transversely and longitudinally as to conform with the desired outer surface of the stave in its complete foi-1n.

`G Gr. are the inner knives, which are also of -thin steel. They are supported by theirinnerends at a distance from the outer knife suiiicieut to accommodate the rgreatest thickness of stave of thcirgauge lot cask, and 'curve outward to the said outer knife.

The extremities of these'curved portions y form the c hines of the staves. Grooves transversely of them, at proper' distance from their ends, form V or U-shaped edges gf, which serve to form thc crozes.

H H are gauges for determining -the'thickness of stave cut by the machine. They are arranged in the periphery of any of the disks b b ofthe cylinder, be-

ing attached `to them by hinges or pivots It, and are y adjustable by screws It on their equivalent, applied to' their free ends. 0r said gauges may form, additionally, the attachments for the cutters G, and the resiliency of said cutters may enable wedges or blocks simply to be employed to adjust them. They are wholly o r in part in front of the edges of the cutters,

and operate by the boltsr being set up to them.

For varying-*the length of stave the disks t b" of the cylinder are adjusted to the proper relative -po sitions and the knives replaced as required.

The cutters G may obviously constitute the ends of a single bar.

r Operation.

Reciprocating motion being imparted to the rod F from the crank of a horse-power or other motor, a steamed bolt is placed on the table C, with its grain parallel to the axis of the cylinder, `and fed up, by hand or suitable machinery, to the cutters, when the operation commences. knife F prepares the face of the bolt to form 'the inner surface of a stave. The bolt is then fed up agaiI st tue gauges II, and, the knives descending, a

At the rst oscillation thel stave is severed, and its outer surface formed by the knife F, the face of the bolt being prepared forl the vsucceeding; one, while the knives G croze and'chamfer the stave being severed. The operation thuslcontinues, a. stave, finished except jointing, being` produced at each movement. v

Claims. 'We claim as our inventionl 1. t The crozng and ehamfering-kmves G, constructedrs represented and described, for the purpose specy 2. The arrangement, in thesurface of `the cylinder" 13,'0f the hinged or pivoted gauges H, for determin-` ing the thickness of' the staves, substantially as shown and set forth.

A. J. HOWELL. 1

Witnesses: JAMES lvJRPHY..v

J oHN ANDERS,

H. DoBBs. 

